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https://issues.apache.org/jira/browse/HIVE-14754?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15851527#comment-15851527
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Barna Zsombor Klara commented on HIVE-14754:
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It is completely random, isn't it? It is from the default size of the reservoir
in Codahale:
http://grepcode.com/file/repo1.maven.org/maven2/com.codahale.metrics/metrics-core/3.0.0/com/codahale/metrics/ExponentiallyDecayingReservoir.java
We use this reservoir, and have been using it before my patch, by default for
every timer.
The value is configurable in Codahale but we didn't expose any property in hive
for it. Maybe it wouldn't be a bad idea to do so. I will raise a Jira for it.
> Track the queries execution lifecycle times
> -------------------------------------------
>
> Key: HIVE-14754
> URL: https://issues.apache.org/jira/browse/HIVE-14754
> Project: Hive
> Issue Type: Sub-task
> Components: Hive, HiveServer2
> Affects Versions: 2.2.0
> Reporter: Barna Zsombor Klara
> Assignee: Barna Zsombor Klara
> Attachments: HIVE-14754.1.patch, HIVE-14754.2.patch, HIVE-14754.patch
>
>
> We should be able to track the nr. of queries being compiled/executed at any
> given time, as well as the duration of the execution and compilation phase.
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